What is the measure of each base angle of an isosceles triangle if its vertex angle measures 38 degrees and its 2 congruent sides measure 23 units?

Question

anonymous · Answer

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What is the measure of each base angle of an isosceles triangle if its vertex angle measures 38 degrees and its 2 congruent sides measure 23 units?

anonymous · Answer

the sum of the angles of atrianlge os 180 degrees

use this simple formula to find the measure of the base angle. .

base angle= (180-38)/2   =71 degrees.

anonymous · Answer

why i divide it by 2?

anonymous · Answer

i got 71 degrees. but how can each angle is to 71 degrees if trainlges equal to 180?

anonymous · Answer

because, the base angle of an isosceles triangle are equal..

let's check
    
A+B+C=180
71+71+38= 180
  180          =180

anonymous · Answer

is it clear to you?

anonymous · Answer

yes thank you.